4.4

# The DELETE Clause

### The DELETE Clause

• You can delete single or multiple columns with a single statement.
• You can use a subquery or a WHERE clause with a DELETE statement.
• By default MySQL is in safe update mode which prevents coding a delete statement without a WHERE clause.

Code Example:

1    USE world;2    DELETE 3    FROM city 4    WHERE name = 'san felipe' AND countrycode = 'chl';

Results:

DELETE

• You begin a delete statement with the DELETE clause.

FROM city

• You must specify the table from which you are deleting rows.

WHERE name = 'san felipe' AND countrycode = 'chl';

• You should use a WHERE clause with a DELETE statement to avoid deleting every row in a table.

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